Speed-reducer



D. H. HATL'EE. SPEED REDUCER. APPLICATION men FEB.26, 1920.

1,365,492. Patented Jan. 11, 1921.

- '2 SHEETS-SHEET I. at

D. H. HATLEE.

SPEED REDUCER.

APPLICATION FILED 55.25. 1920.

Patented Jan. 11

192 1. SHEET 2- 2 SHEETS- UNITED STATES DAVID E. HATLEE, OF WATERVLIET, NEWYORK.

SPEED-REDUGER.

Specification of Letters Patent.

Application filed February 26, 1920. 'Serial No. 361,483.

. T 0 all whom it may concern:

a citizen of the United States, residing at Watervliet in the county of Albany and State of New York, have invented certain new and useful Improvements in Speed- Reducers; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled inthe art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

The object of this invention is to provide a novel speed reducer, interposed between a driving and a driven shaft, whereby the speed of revolution ofthe driven shaft is much less than that of the driving shaft.

A furtherobject is to provide a speed reducing mechanism which shall be very simple in construction and thoroughly practical from a manufacturing standpoint.

The invention is clearly disclosed in an exemplary form in the accompanying drawings, in which like reference characters designate corresponding parts throughout the several views.

- Briefly described:

Figure 1 is a view in side elevation, partly in section, of the speed reducing mechanism.

Fig. 2 isa section on the line 2, 2 of Fig. 1. h

Fig. 3 is a section on the line 3, 3 of Fig. 1.

Fig. 4 is a detached detail view of the counterbalance, and Fig. 5 is a detached detail view of the disk on the driven shaft.

Referring now in detail to the drawings:

1 and 2 designate standards rising from a base 3, said standards rotatably supporting a driving shaft 4 and a driven shaft 5 respectively.

The standard 1 carries a housing 6, provided with a circumferential flange 7, to whichis detachably secured a guard member 8, which, as shown, is in the form of a ring, provided with a circumferential flange 9, having an angled terminal 10 hearing against the inner surface of the flange 7 The shaft 4 is a crankshaft and is pro vided at one end with a concentric disk 11,

the shaft 4 and that the disk 17 is carrying an eccentric pin 12, passing through the head 13 of a gear 14, meshing with a stationary gear ring 15, secured to the flange 7.

The flange 7 is concentric with the shaft 4 and the gear 15 is also concentric with the shaft 4, and the gear 14 eccentric to said shaft 4. The gear 14 is of lesser diameter than the'gear 15 and has a lesser number of teeth. By reason of the eccentricity of the gear 14 and by reason of the lesser diameter thereof, a portion only of the gear 14 meshes with the gear 15 at any one time.

Supported on the disk 11 is a counter- I necting the gear 14 and the disk 17 is an annular series of cranks, or links, 18, as clearly shown in Fig. 1.

V The-o eration is as follows:

Rotation being imparted to the drivin shaft 4, the gear 14, being in mesh wit the stationary gear 15, turns backward and such motion is imparted to the disk 17, and consequently, to the driven shaft 5, which, by the construction described, is driven with greatly less speed than the crank shaft 4.

' It will be noted b the construction described that the sha 5 is concentric with also concentric with said shafts. What I claim to be new is:

1. A transmission mechanism employingl concentric driving and driven shafts, a rigi housing embracing the driving shaft and having an inwardl turned annular flange, a gear mounted rlgidl second gear mounted 1n engagement with the first-mentioned gear and eccentric there to, a disk carried ri idly upon the driven shaft and having a ange contained within and with an annular rabbet accommodating the inturned annular flange, and crank connectors connecting the eccentric gear with ortion thereof toward the margin bein the housing, a.

Patented Jan. 11, 1921.

' v of the guard 83, as shown in Fig. 1. Concarried rigidly upon the driven shaft and able within the inset of the disk and in enhaving a flange within and co-acting with gagement with the rigid gear, and crank the inturned annular flange and 'provided connectors connecting the eccentric gear and 10 with an inset space, an internal gear mountthe disk. I

ed rigidly within and about the housing, In testimony whereof I hereunto aflix my and a smaller gear carried eccentrically signature.

upon the driving shaft having a boss mov- DAVID H. HATLEE. 

